Job costing, not just expense categories. Progress billing, retention, and subcontractor 1099s. Licensing and bonding requirements that touch the financials directly.
A generalist CPA can file your return. That’s not the same as understanding your business. Most CPA firms can prepare a return for a trade contractor. Far fewer are actually built around how trade contracting businesses work — job-level margin, licensing and bonding needs, and the cash flow patterns specific to construction, electrical, plumbing, or HVAC work. This list is meant to help you evaluate fit, not just find a name.
Quick comparison: best San Francisco CPA firms for Construction Trades
| San Francisco CPA firm | Best for | Why consider them |
| #1. Basta & Company | Focused entirely on construction businesses, construction-related trades, architecture firms, interior design studios, contractors, builders, and property managers | Combines fractional CFO-style advisory with year-round tax and accounting for owners who want ongoing financial visibility, not just an annual filing relationship. |
| #2. Asnani CPA Tax & Accounting | Various industries including small businesses, digital agencies, startups, tech businesses, home remodelers, and general contractors | SF-based firm that also markets to contractors and builders, with bookkeeping, payroll, and tax planning built around industry needs. |
| #3. Evans & Company CPA | Various industries including healthcare, hospitality, law firms, and construction | East Bay firm serving SF Bay Area clients since 2010, with a dedicated construction-industry practice area. |
| #4. Mandel & King CPAs | Various industries including hospitality, healthcare, law firms, real estate, and general contractors | SF firm with a dedicated construction practice area, including financial statement preparation for bonding and lending purposes. |
| #5. SD Mayer | Various industries including telecommunication, retail, education, government, industrial, healthcare, real estate and construction | Bay Area firm with a specific construction practice area, grown through mergers with other regional CPA practices. |
Criteria
When evaluating a CPA for a trade contracting business, I’d weigh four things before firm size or brand recognition:
- Industry specialization. Does the firm name construction, electrical, plumbing, or HVAC clients specifically, or just “small business” generally?
- Job-costing fluency. Can the firm speak concretely about project-level margin tracking, not just company-level bookkeeping?
- Bonding and lending experience. Has the firm prepared the financial statements contractors need for surety bonds and equipment financing?
- Responsiveness model. Is the relationship built around a once-a-year tax conversation, or ongoing advisory contact through the year?
1. Top-rated Construction CPA Firm in San Francisco: Basta & Company
Based in San Francisco, Basta & Company is led by Samy Basta, CPA, and focuses specifically on construction, architecture, and interior design businesses, along with contractors, builders, and property managers across the Bay Area and California. The firm’s positioning centers on fractional CFO-style advisory work alongside traditional tax and accounting services, aimed at owners who want ongoing financial visibility rather than a once-a-year filing relationship. I’m including our own firm here transparently, alongside firms below with genuine, verifiable specialization in the same space.
Why Basta & Company Is Built for Construction Trades
- Built from day one for contractors, not a general business accountant who added construction later
- Knows which jobs are actually making you money, and not just what’s in the bank account
- Keeps your paperwork ready so you can get bonded and win bigger jobs
- Plans ahead for the cash gaps that come with retention holds and progress payments
- Stays on top of California’s contractor rules and licensing so you don’t get blindsided
- Goes beyond “clean books” to help you actually make decisions: what to bid, when to hire, when to buy equipment
- A real partner who knows your business, not just someone who shows up at tax time
2. Asnani CPA Tax & Accounting
San Francisco-based Asnani CPA specifically markets its work with contractors and builders, offering bookkeeping, payroll, and tax planning services structured around construction industry needs.
Best known as:
- Bay Area-based firm with a dedicated focus on contractors and construction businesses
- Known for a personable, approachable style and tax-reduction-focused guidance
- Offers bookkeeping, tax, and payroll as part of an outsourced accounting package
3. Evans & Company CPA
Based in the East Bay, Evans & Company CPA has served San Francisco Bay Area clients since 2010 and maintains a dedicated construction-industry practice area, including work with general contractors, subcontractors, and residential developers.
Best known as:
- Boutique Walnut Creek firm with a construction-focused service line
- Positions itself as blending large-firm technical expertise with boutique personal attention
- Also serves real estate and multi-jurisdiction business clients
4. Mandel & King CPAs
A San Francisco firm with a dedicated construction practice page, Mandel & King works with construction management firms, general contractors, subcontractors, and residential developers, including financial statement preparation for bonding and lending purposes.
Best known as:
- Long-established San Francisco firm with a dedicated construction practice
- Offers full-service accounting, from audits to financing/bonding documentation
- Maintains relationships with real estate professionals, attorneys, and bankers
5. SD Mayer
A Bay Area firm offering business consulting services with a specific construction practice area, SD Mayer has grown through mergers with other regional CPA practices and offers broader advisory services alongside traditional tax and accounting work.
Best known as:
- Larger, multi-office Bay Area firm offering tax, audit, and outsourced accounting
- Backed by decades of regional presence and a sizable, specialized professional team
- Serves a broad range of industries beyond just construction and trades
Why Construction Accounting Matters for your Business
Running a construction business in California means navigating one of the most heavily regulated environments in the country, layered state tax rules, licensing requirements, and construction-specific statutes that don’t apply the same way anywhere else. Generic bookkeeping wasn’t built for this. Here’s what makes California construction accounting different, and why it matters for your bottom line.
Job Costing Still Comes First, But California Adds Compliance Layers
Project-by-project job costing is the foundation of construction accounting anywhere. In California, it also has to account for state-specific overlays: CSLB licensing requirements tied to your business structure, and (for public works) certified payroll and prevailing wage compliance that most out-of-state contractors never have to think about. A California-focused accountant builds job costing that captures these compliance costs alongside labor and materials — not as an afterthought.
Multi-Jurisdiction Complexity Within the State
Contractors working across California counties and cities often assume state-level compliance is enough, it isn’t. Local business licenses, city-level gross receipts taxes, and county-specific permitting requirements can vary significantly even within a single project’s supply chain. A California construction accountant builds a process for tracking these obligations by jurisdiction so nothing falls through the cracks as you expand your service area.
Tax Strategy Shaped by California’s Relationship with Federal Law
California doesn’t automatically adopt every federal tax change, it “conforms” to some provisions and not others, on its own timeline. This matters more than usual right now: federal tax law changes affecting bonus depreciation, R&D expensing, and the SALT deduction cap don’t all flow through to California the same way they do federally. On the state-specific side, California’s Pass-Through Entity elective tax remains available for many contractors organized as S-corps, partnerships, or LLCs, subject to periodic extension by the state legislature, and the mechanics around it, including prepayment deadlines, are worth reviewing annually rather than assumed to stay static. A generalist accountant applying purely federal tax planning to a California return risks missing both the mismatches and the state-specific opportunities.
Bonding Still Runs Through California-Specific Financials
California sureties and lenders evaluating contractors for bonding capacity expect WIP schedules and financial reporting that reflect state licensing status and compliance history, not just generic financial statements. Working with a CPA who understands what California bonding underwriters actually look for puts you in a stronger position when it’s time to bid larger public or private work.
Five Things to Ask Before Choosing
1. Can you show me an example of job-costing work you’ve done for a contractor? A firm with genuine trade experience should be able to describe this concretely, not in generic bookkeeping language.
2. Have you prepared financials for a surety bond or equipment loan application? This is a specific, verifiable deliverable that generalist firms often haven’t done, even if they’re comfortable with standard tax returns.
3. How often will I actually talk to someone, beyond tax season? The responsiveness model matters as much as expertise — a firm that only engages once a year can’t catch a cash flow problem while it’s still small.
4. Do you understand prevailing wage and licensing requirements specific to my trade? These touch the financials directly for many contractors and are easy for a generalist firm to miss.
5. What does your fee structure look like as my revenue grows? Understanding this up front avoids a surprise renegotiation once the business crosses a size threshold.
The Bigger Reframe
The question isn’t which CPA firm is the biggest or best-reviewed in general — it’s which one is actually built around how trade contracting businesses operate. A firm that treats job costing, bonding, and licensing as core to the relationship, rather than an occasional add-on, is worth more to a growing contractor than a bigger name with no specific trade experience.
Bottom Line
Industry fit matters more than firm size or name recognition. Job-costing fluency and bonding experience are concrete, askable things — not vague reputation. A once-a-year tax relationship can’t catch a cash flow problem while it’s small. Ask specific questions before choosing, not just “do you work with contractors.”
This list is a starting point for evaluation, not a ranking.
Frequently Asked Questions
- Do these firms serve trades beyond construction, like plumbing or electrical specifically? Most of the firms listed describe their focus broadly as construction or contractor-industry work; it’s worth confirming directly with each firm whether they have specific experience with your particular trade.
- What’s the difference between a bookkeeper and a CPA for a trade business? A bookkeeper generally handles day-to-day recordkeeping, while a CPA can also provide tax planning, financial statement preparation for bonding or lending, and broader advisory work — many growing contractors eventually need both.
- How do I know if a CPA firm actually understands job costing, or just says they do? Ask for a concrete example of how they’ve structured job-costing reports for a contractor client — a firm with real experience should be able to describe this specifically rather than in generic bookkeeping terms.
- Should I switch CPAs if mine doesn’t specialize in trades? Not necessarily — it depends on whether your current firm is meeting your needs; this list is meant to help you evaluate options, not suggest that every contractor needs to switch.
Book an Introductory Call
I help growing California trade businesses get the job-costing visibility, bonding-ready financials, and ongoing advisory support that a once-a-year tax relationship can’t provide.
If you’re a Bay Area trade contractor evaluating CPA firms, book an introductory call with me.
